Sprinkler



20, 1940- V G. BUELNA 2,212,009

SPRINKLER Filed March 1, 1939 Patented Aug. 20, 1940 UNITED STATES SPRINKLER Guadalupe Buelna, I Santa Barbara, Calif., as-

signor to L. R. Nelson Mfg. Co., Inc., Peoria, 111.,

a corporation of Illinois Application March 1, 1939, Serial No. 259,100 9 Claims. (Cl. 299-68) This invention pertains to water sprinklers for use on golf courses, extensive lawns, in orchards, gardens and the like, the sprinkler being'of the slow rotary type, the main object of which is to furnish a simple arrangement of related parts, portions of which are rotated by a water stream projected from a nozzle of the device, the whole causing a main sprinkler nozzle to slowly rotate to cover the area to be treated, this action being of a step by step nature whereby to produce 'athorough wetting of said area.

Another object is to mount a swingable arm upon the sprinkler normally and constantly urged at a free end thereof toward a part of thesprinkler to abut the same and to provide a jet driven rotating part adapted to swing said arm away from its abutting position and then suddenly release it to cause it to strike the part, the blow thus created, causing the sprinkler'to take up 'a slight advance in rotative movement.

' Another object is to provide a mechanism such as described by which, due to constant fast action as produced by a water jet, the sprinkler will advance steadily in its rotative action in a step-by-step manner. I

A still further object lies in mounting the described operating mechanism on a part or extension distant from the axis of sprinkler rotation by which the named arm when released can strike at a point far distant from said axis where considerable leverage is obtainable and thus'provide a positive rotative step-by -step action Furthermore, an important object lies in employing a rotary'meinber as the main power means against whicha full water stream is constantly projected and thereby always provide a maximum of power, and therethrough swing a striking arm in opposition to' constant tension thereon and then suddenly release said arm to permit it to strike with force upon an arm of the sprinkler distant from the sprinkler-axis of rotation to thereby'set up a very positive action in the named step-by-step movement.

i In addition to the objects outlined the invention' lies in certain details ofconstruction and arrangement of parts to bebrought out herein and to form the subject of someof the claims to follow. v To the end that'the invention in all of its'details may properly be made known the appended drawing is "provided to form part hereof.

- Figure 1 is a side elevation of one form of the sprinkler of the present invention;

Figure 2 is a plan of the same; r

Figure-3 is an elevation of slight modification of the first form, employing'somewhat like principles; 3 Figure 4 is a plan of the same',-and 1 Figure 5 is a fragmentary plan of a sprinkler arrangement slightly different from the types shown in the other figures named.

In said drawing, in Figural the numeral I denotes a sprinkler body mounted on'a water supply pipe 2 in any approved and well known manner upon which it is adapted to rotate, 3 denoting any usual type of sprinkler inozzle.

Extending from the body] is a body portion 4 and a part 5 as parts thereofboth acting as supports for mechanism now to be'described:

Mounted to rotate on the said part 5 is'a disc cuff or wheel' fi in this instance fluted on its periphery as at I, said disc or wheel adapted to'r'otate, again in this instance in a plane substantially paralleling the plane of rotation" ofthe body I,

' there being a nozzle 8 extending fromthe" latter for directing a water stream-upon the periphery of said disc, 9 being an extension or hub of the latter. t w

Pivotally mounted on'the" part 5' in any suitable man neris one end of an arm-Illwhos'e free end carries in a suitable bearing thereon a disc ll whose edgeis in'the'fo'rm of acam having an abrupt step l2;

The said edge of the camis adapted to'abut the named hub 9 of the disc'or wheel't, and in control of the arm lll is a coil' 'sprin'g l3 o'ne of whose ends is 'suitably'eng'aged with the part 5, the other end engaging" the said; arm. The

tendency of the spring, as applied, is to hold the Cam I I normally and yieldingly in abutment with the said hub 9. While thespring has beennamed to perform thelatter 'office it is to be understood that other means may be usedto serve the same end.

The water jet issuing from the nozzle'8 in striking the fiutes of the disc or wheel 6 rotates that member thus rotating the cam ll due to frictional engagement of the latter with the disc hub 9. During rotation the cam due to-its constantly increasing diameter or the constantly increasing distancefrom its center of rotation to its point of contact with said hub gradually urges the arm l0 outwardly in opposition to' the tension'of the spring l3 until the step [2 hay-- ing passedover said hub permits'the'cam at its shortest diameter adjacent the step to deal a sharp blow upon the hub due to spring action, said blow being delivered to the body I' through the disc 6 and the post 5 carrying the latter. "In this entire action there are no forces of' any moment acting upon the body I to cause it to swing on its swivel mounting at the pipe 2 in a direction the reverse of a forward direction of rotation. However, as each blow is delivered by the cam upon the hub 9 the sprinkler is urged in said forward direction step by step in the sprinkling operation, the leverage being far removed from the said swivel mounting making the action sure and positive.

In Figures 3 and 4 somewhat the same structure is illustrated wherein the sprinkler body is denoted at l swiveled on the pipe or stem 2, and having a sprinkler nozzle 3' as a part thereof. In this instance, however, a disc or wheel 6, corresponding to 6 in the earlier figures, happens to have its bearing in and on the body I at the swiveling center thereof, there being a nozzle 8 for discharging a water stream upon the disc periphery as in the former case. Surmounting the disc or wheel 6' is a cam H rotatable therewith. An arm H! is pivoted at one end on the body I its other or free end adapted to abut the nozzle 3' by, in this instance, a downwardly extending projection I0 In addition, an arm extension I0 fixed with respect to the arm l0 carries an abutment member such as a roller I0 to engage said cam, it being observed that the latter lies between the said roller and said arm ID, the relation of the parts being such that while the disc rotates, in one of its positions the arm is moved away from the nozzle-striking position as the high side of the cam moves against it. But immediately following that action the said high side of the cam engages and moves the roller I0 in the opposite or reverse direction of movement to swing the arm with a sudden jerk to bring about a heavy blow upon the nozzle and thereby advance the sprinkler. During rapid action therefore the desired and required step-by-step action is assured.

In this form, again, there is no force or action that will tend to impart retrograde movement to the sprinkler, any exerted force being imparted by the arm I0 for a forward or advance movement only.

It will be understood that when the high side of the cam is adjacent one of the denoted parts upon which it is to operate the other part is free to swing in the direction of movement being imparted by said cam, hence the action is free and sure at all times.

In Figure 5 the sprinkler body at M may correspond to that in Figure 4 for example, and a fluted disc l4 journaled thereon may correspond to 6' together with a cam l5 as before, which may lie at the point of axial rotation of the body if desired, as in Figure 3. Pivoted at one end on the body I4 is an arm l6 adapted to abut the cam as shown and when lying upon the lowermost side thereof is adapted to abut, at its free end, the said body M.

A spring I! corresponding to that in Figures 1 and 2, for example, serves to cause the arm to strike the body with considerable force, depending upon said spring, this occurring as the step of the cam passes away from the face of the arm in contact with such cam. This form, as may be seen, thus employs some of the structures shown in the earlier figures, M being a jet nozzle.

As has been made clear the device depends upon a constantly driven rotatable member, the latter serving to impart action through the instrumentality of other parts by which a striking action on the swiveled sprinkler body wherein and whereby no retrograde action on the latter is induced, but rather a continued forward movement in step-by-step manner. In this connection, the striking action serves to keep free the friction surfaces of the sprinkler body and the support on which it is mounted so the free rotation of the body is assured.

I claim:

1. In a sprinkler of the type named, the combination with a rotatably mounted sprinkler body connected to a sauce of water supply and including a nozzle, of a rotatable member mounted on the body in position to be driven by a water stream issuing from said nozzle, a part driven by said member, an arm pivotally mounted on the body arranged to strike the body distant from its mounting and adapted to be swung by said part in one direction and then to be released therefrom, and means to swing the said arm positively in an opposite direction on being released, and through the instrumentality thereof imparting a striking force to advance the sprinkler through part of a rotation of its said mounting.

2. In a sprinkler of the type named, the combination with a rotatably mounted sprinkler body connected to a source of water supply and including a nozzle, of a rotatable member mounted on the body in position to be driven by a water stream issuing from said nozzle, a part driven by said member, an arm pivoted at one end on the body arranged to strike the body distant from its mounting and adapted to be swung by said part away from the body in a plane or direction substantially paralleling the plane of rotation of said body, said part releasing the arm at the end of the swinging movement, and means to positively swing the arm toward the body, said arm in the latter movement strikingthe constructed sprinkler causing the same to advance through part of a full rotation on its said mounting.

3. In a sprinkler of the type named, a sprinkler body mounted to rotate in a substantially horizontal plane and including a nozzle, an arm pivotally mounted on the body and having a free end, a rotatable cam rotatably mounted on the arm adapted for swinging the same in one direc- 4 tion in a horizontal plane, means to positively swing the arm in an opposite direction and therethrough setting up a blow upon' the constituted sprinkler in the direction of rotation of the body, and a rotatable member mounted on the body in position to be driven by a water stream issuing from said nozzle, said member positively rotating the cam in one direction.

4. In'a sprinkler of the nature described, a sprinkler body mounted to rotate in a substantially horizontal plane and including a nozzle, a rotatable cam, a swingable arm mounted on the body and carrying said .cam, said arm adapted to bring about a striking action upon and distant from the axis of rotation of the sprinkler, said cam in rotation adapted to swing the arm away from the body and then release it, means to swing the arm positively toward and against a part of the sprinkler, and means to rotate the cam including a rotatable member in position to be driven by a water stream issuing from said nozzle.

5. In a sprinkler of the nature described, a sprinkler body mounted to rotate, and including a nozzle, means mounted on the body adapted to swing, the same adapted to abut a part of the sprinkler structure distant from the axis of rotation thereof at a position thereon substantially in a line paralleling its plane of rotation, means to forcibly bring about the abutting relation of the first named means with said part of the actuated sprinkler structure to urge the latter in the direction of its rotation, a rotatable member mounted on the body driven by a water stream issuing from the said nozzle, the same including a structure co-operating with the said first named means to shift the latter in a direction opposite to that imparted to it by the last named means.

6. In a, sprinkler of the nature described, a sprinkler body mounted to rotate, and including a nozzle, a member mounted on the body rotated by a water stream issuing from said nozzle, an arm pivotally mounted on the said body and'having a free end, a cam carried by said free end and abutting part of the rotatable member and having an abrupt step portion, means constantly urging the arm and its cam toward the said part of said rotatable member, said cam delivering a blow upon the named part when its step portion drops from said part thereby to deliver to the sprinkler an urging movement in the direction of its rotation.

'7 In a sprinkler of the nature described, a sprinkler body mounted to rotate, and including a nozzle, a member mounted to rotate by discharge of a water stream thereon from said nozzle, a cam driven by said member having a step portion, a bifurcated arm pivoted on the body one of its arms lying adjacent the cams operating surface, the other arm of the said bifurcated arm lying at substantially the diametrically opposite side of the cam at the said operating surface thereof, said cam in its rotation adapted to swing the arm alternately in opposite directions and in one direction of swing of the arm causing the said arm to strike a blow upon the sprinkler body to advance the latter in the direction of rotation.

8. In a sprinkler of the nature described, a sprinkler body adapted to rotate, and including a nozzle, a member mounted on the body adapted to be rotated by a water stream from said nozzle, a, cam rotated thereby having an abrupt step portion, an arm pivoted on said body adapted near its free end to abut the cam and likewise adapted to abut the body distant from its axis of rotation in one of the positions of the cam, and means to urge the arm toward the said cam, said arm through said means adapted to strike a blow upon the body to urge-the sprinkler in the direction of rotation as the step portion of the cam passes from beneath the arm.

9. A water sprinkler of the type named, in-

cluding with a sprinkler body mounted to rotate an arm pivotally mountedon the body, means acting on the arm to constantly hold the same under stress in the direction of the body for delivering a blow thereon distant fromthe axis of body rotation to advance said body in the direction of rotation on its mounting, and a power driven rotating member having an ofiset portion adapted to bring about the swinging of the arm in opposition to the said means, said member adapted in its rotation to suddenly cause the release of said arm to permit it to deliver a blow upon the body.

, GUADALU'PE BUELNA, 

